diff options
Diffstat (limited to 'bsps/arm/lpc176x/console/console-config.c')
| -rw-r--r-- | bsps/arm/lpc176x/console/console-config.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/bsps/arm/lpc176x/console/console-config.c b/bsps/arm/lpc176x/console/console-config.c new file mode 100644 index 0000000000..c80932daf7 --- /dev/null +++ b/bsps/arm/lpc176x/console/console-config.c @@ -0,0 +1,192 @@ +/** + * @file + * + * @ingroup lpc176x + * + * @brief Console configuration. + */ + +/* + * Copyright (c) 2008-2014 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <libchip/ns16550.h> + +#include <bsp.h> +#include <bsp/io.h> +#include <bsp/irq.h> +#include <bsp/console-termios.h> + +/** + * @brief Gets the uart register according to the current address. + * + * @param addr Register address. + * @param i Index register. + * @return Uart register. + */ +static inline uint8_t lpc176x_uart_get_register( + const uintptr_t addr, + const uint8_t i +) +{ + volatile uint32_t *reg = (volatile uint32_t *) addr; + + return (uint8_t) reg[ i ]; +} + +/** + * @brief Sets the uart register address according to the value passed. + * + * @param addr Register address. + * @param i Index register. + * @param val Value to set. + */ +static inline void lpc176x_uart_set_register( + const uintptr_t addr, + const uint8_t i, + const uint8_t val +) +{ + volatile uint32_t *reg = (volatile uint32_t *) addr; + + reg[ i ] = val; +} + +static bool lpc176x_uart1_probe(rtems_termios_device_context *ctx) +{ + (void)ctx; + + lpc176x_module_enable( LPC176X_MODULE_UART_1, LPC176X_MODULE_PCLK_DEFAULT ); + + lpc176x_pin_select( LPC176X_PIN_UART_1_TXD, LPC176X_PIN_FUNCTION_01 ); + lpc176x_pin_select( LPC176X_PIN_UART_1_RXD, LPC176X_PIN_FUNCTION_01 ); + + return true; +} + +#ifdef LPC176X_CONFIG_UART_2 +static bool lpc176x_uart2_probe(rtems_termios_device_context *ctx) +{ + (void)ctx; + + lpc176x_module_enable( LPC176X_MODULE_UART_2, LPC176X_MODULE_PCLK_DEFAULT ); + + lpc176x_pin_select( LPC176X_PIN_UART_2_TXD, LPC176X_PIN_FUNCTION_01 ); + lpc176x_pin_select( LPC176X_PIN_UART_2_RXD, LPC176X_PIN_FUNCTION_01 ); + + return true; +} +#endif + +#ifdef LPC176X_CONFIG_UART_3 +static bool lpc176x_uart3_probe(rtems_termios_device_context *ctx) +{ + (void)ctx; + + lpc176x_module_enable( LPC176X_MODULE_UART_3, LPC176X_MODULE_PCLK_DEFAULT ); + + lpc176x_pin_select( LPC176X_PIN_UART_3_TXD, LPC176X_PIN_FUNCTION_10 ); + lpc176x_pin_select( LPC176X_PIN_UART_3_RXD, LPC176X_PIN_FUNCTION_10 ); + + return true; +} +#endif + +#ifdef LPC176X_CONFIG_CONSOLE +static ns16550_context lpc176x_uart_context_0 = { + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 0"), + .get_reg = lpc176x_uart_get_register, + .set_reg = lpc176x_uart_set_register, + .port = UART0_BASE_ADDR, + .irq = LPC176X_IRQ_UART_0, + .clock = LPC176X_PCLK, + .initial_baud = LPC176X_UART_BAUD, + .has_fractional_divider_register = true +}; +#endif + +#ifdef LPC176X_CONFIG_UART_1 +static ns16550_context lpc176x_uart_context_1 = { + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 1"), + .get_reg = lpc176x_uart_get_register, + .set_reg = lpc176x_uart_set_register, + .port = UART1_BASE_ADDR, + .irq = LPC176X_IRQ_UART_1, + .clock = LPC176X_PCLK, + .initial_baud = LPC176X_UART_BAUD, + .has_fractional_divider_register = true +}; +#endif + +#ifdef LPC176X_CONFIG_UART_2 +static ns16550_context lpc176x_uart_context_2 = { + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 2"), + .get_reg = lpc176x_uart_get_register, + .set_reg = lpc176x_uart_set_register, + .port = UART2_BASE_ADDR, + .irq = LPC176X_IRQ_UART_2, + .clock = LPC176X_PCLK, + .initial_baud = LPC176X_UART_BAUD, + .has_fractional_divider_register = true +}; +#endif + +#ifdef LPC176X_CONFIG_UART_3 +static ns16550_context lpc176x_uart_context_3 = { + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 3"), + .get_reg = lpc176x_uart_get_register, + .set_reg = lpc176x_uart_set_register, + .port = UART3_BASE_ADDR, + .irq = LPC176X_IRQ_UART_3, + .clock = LPC176X_PCLK, + .initial_baud = LPC176X_UART_BAUD, + .has_fractional_divider_register = true +}; +#endif + +const console_device console_device_table[] = { + #ifdef LPC176X_CONFIG_CONSOLE + { + .device_file = "/dev/ttyS0", + .probe = console_device_probe_default, + .handler = &ns16550_handler_interrupt, + .context = &lpc176x_uart_context_0.base + }, + #endif + #ifdef LPC176X_CONFIG_UART_1 + { + .device_file = "/dev/ttyS1", + .probe = lpc176x_uart1_probe, + .handler = &ns16550_handler_interrupt, + .context = &lpc176x_uart_context_1.base + }, + #endif + #ifdef LPC176X_CONFIG_UART_2 + { + .device_file = "/dev/ttyS2", + .probe = lpc176x_uart2_probe, + .handler = &ns16550_handler_interrupt, + .context = &lpc176x_uart_context_2.base + }, + #endif + #ifdef LPC176X_CONFIG_UART_3 + { + .device_file = "/dev/ttyS3", + .probe = lpc176x_uart3_probe, + .handler = &ns16550_handler_interrupt, + .context = &lpc176x_uart_context_3.base + }, + #endif +}; + +const size_t console_device_count = RTEMS_ARRAY_SIZE(console_device_table); |